Catharanthus plant named ‘Sunnichiroro’

ABSTRACT

A new and distinct cultivar of  Catharanthus  plant named ‘Sunnichiroro’, characterized by its trailing plant habit; vigorous growth habit; freely branching habit; freely flowering habit; long flowering period; large red purple-colored flowers; and good garden performance.

Botanical designation: Catharanthus roseus.

Cultivar denomination: ‘Sunnichiroro’.

RELATED TO CLOSELY-RELATED APPLICATIONS

Title: Catharanthus Plant Named ‘Sunnichipink’.

Applicants: Naoto Takamura, Kiyoshi Miyazaki & Takuro Ishihara.

Filed: Concurrently with this application.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Catharanthus, botanically known as Catharanthus roseus and hereinafter referred to by the name ‘Sunnichiroro’.

The new Catharanthus is a product of a planned breeding program conducted by the Inventors in Higashiomi, Shiga, Japan. The objective of the breeding program is to develop new freely branching and flowering Catharanthus cultivars with trailing plant habit and attractive and unique flower coloration.

The new Catharanthus originated from a cross-pollination conducted by the Inventors in Higashiomi, Shiga, Japan in 2003 of a proprietary selection of Catharanthus roseus identified as code number 03CAT-7, not patented, as the female, or seed, parent with a proprietary selection of Catharanthus roseus identified as code number 03CAT-YM, not patented, as the male, or pollen, parent. The new Catharanthus was discovered and selected by the Inventors as a flowering plant from within the progeny of the stated cross-pollination in a controlled greenhouse environment in Higashiomi, Shiga, Japan in 2004.

Asexual reproduction of the new Catharanthus by vegetative cuttings in a controlled greenhouse environment in Higashiomi, Shiga, Japan since 2004, has shown that the unique features of this new Catharanthus are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The new Catharanthus has not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment and cultural practices such as temperature, daylength and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Sunnichiroro’. These characteristics in combination distinguish ‘Sunmchiroro’ as a new and distinct cultivar of Catharanthus:

-   -   1. Trailing plant habit.     -   2. Vigorous growth habit.     -   3. Freely branching habit.     -   4. Freely flowering habit.     -   5. Long flowering period.     -   6. Large red purple-colored flowers.     -   7. Good garden performance.

Plants of the new Catharanthus can be compared to plants of the female parent selection. Plants of the new Catharanthus differ from plants of the female parent selection in the following characteristics:

-   -   1. Plants of the new Catharanthus are more vigorous than plants         of the female parent selection.     -   2. Plants of the new Catharanthus have red purple-colored         flowers whereas plants of the female parent selection have         white-colored flowers.

Plants of the new Catharanthus can be compared to plants of the male parent selection. Plants of the new Catharanthus differ from plants of the male parent selection in the following characteristics:

-   -   1. Plants of the new Catharanthus are more trailing than and not         as upright as plants of the male parent selection.     -   2. Plants of the new Catharanthus have red purple-colored         flowers whereas plants of the male parent selection have         white-colored flowers.

Plants of the new Catharanthus can be compared to plants of the Catharanthus roseus ‘Sunnichipink’, disclosed in a U.S. Plant patent application Ser. No. 12/217,749, filed concurrently. Plants of the new Catharanthus differ from plants of ‘Sunnichipink’ in the following characteristics:

-   -   1. Plants of the new Catharanthus are slightly larger than         plants of ‘Sunnichipink’.     -   2. Plants of the new Catharanthus are more freely branching than         plants of ‘Sunnichipink’.     -   3. Plants of the new Catharanthus have darker red purple-colored         flowers than plants of ‘Sunnichipink’.

Plants of the new Catharanthus can also be compared to plants of ‘Frappe Orange’, not patented. In side-by-side comparisons conducted in Higashiomi, Shiga, Japan, plants of the new Catharanthus and ‘Frappe Orange’ differed in the following characteristics:

-   -   1. Plants of the new Catharanthus were taller than plants of         ‘Frappe Orange’.     -   2. Plants of the new Catharanthus were more freely branching         than plants of ‘Frappe Orange’.     -   3. Plants of the new Catharanthus had longer internodes than         plants of ‘Frappe Orange’.     -   4. Plants of the new Catharanthus had larger flowers than plants         of ‘Frappe Orange’.     -   5. Plants of the new Catharanthus had narrower petals than         plants of ‘Frappe Orange’.     -   6. Plants of the new Catharanthus and ‘Frappe Orange’ differed         in flower color as plants of ‘Frappe Orange’ had light         pink-colored flowers.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Catharanthus, showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Catharanthus.

The photograph at the top of the sheet comprises a side perspective view of a typical flowering plant of ‘Sunnichiroro’ grown in a container.

The photograph at the bottom of the sheet comprises a close-up view of typical flowers and leaves of ‘Sunnichiroro’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations, measurements and values describe plants grown in 13 cm. containers in Higashiomi, Shiga, Japan, under commercial practice during the summer in an outdoor nursery. During the production of the plants, day temperatures averaged 25° C. and night temperatures averaged 15° C. Plants used for the description had been growing for four months. Plants used for the photographs had been growing for six months. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2001 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Catharanthus roseus ‘Sunnichiroro’. -   Parentage:     -   -   Female, or seed, parent.—Proprietary selection of             Catharanthus roseus identified as code number 03CAT-7, not             patented.         -   Male, or pollen, parent.—Proprietary selection of             Catharanthus roseus identified as code number 03CAT-YM, not             patented. -   Propagation:     -   -   Type.—By vegetative cuttings.         -   Time to initiate roots, summer.—About two weeks at 30° C.         -   Time to initiate roots, winter.—About three weeks at 25° C.         -   Time to produce a rooted young plant, summer.—About five             weeks at 30° C.         -   Time to produce a rooted young plant, winter.—About six             weeks at 25° C.         -   Root description.—Fibrous; white in color.         -   Rooting habit.—Freely branching; moderately dense. -   Plant description:     -   -   Plant and growth habit.—Trailing plant habit. Freely             branching with about 17 primary lateral branches developing             per plant. Vigorous growth habit.         -   Plant height.—About 17.6 cm.         -   Plant diameter.—About 38.7 cm. -   Lateral branch description:     -   -   Length.—About 23.8 cm.         -   Diameter.—About 3 mm.         -   Internode length.—About 2.5 cm.         -   Strength.—Strong.         -   Aspect.—Upright to outward.         -   Texture.—Pubescent.         -   Color.—Close to 145C. -   Foliage description:     -   -   Arrangement.—Opposite, simple.         -   Length.—About 6.1 cm.         -   Width.—About 1.8 cm.         -   Shape.—Narrowly elliptic.         -   Apex.—Acute.         -   Base.—Obtuse.         -   Margin.—Entire.         -   Texture, upper and lower surfaces.—Sparsely pubescent.         -   Venation pattern.—Pinnate; reticulate.         -   Color.—Developing leaves, upper surface: Close to 143A.             Developing leaves, lower surface: Close to 137C. Fully             expanded leaves, upper surface: Close to 137A; venation,             close to 145D. Fully expanded leaves, lower surface: Close             to 137C; venation, close to 145D.         -   Petiole.—Length: About 4 mm. Diameter: About 1.5 mm.             Texture, upper and lower surfaces: Sparsely pubescent.             Color, upper and lower surfaces: Close to 145D. -   Flower description:     -   -   Flower arrangement and habit.—Single salverform flowers             arising from upper leaf axils. Freely flowering habit with             usually about 24 flowers per plant at one time. Flowers face             upright or outwardly.         -   Fragrance.—Not detected.         -   Natural flowering season.—Long flowering period; flowering             commences naturally during the spring and plants flower             continuously throughout the summer until late autumn in             Japan.         -   Flower longevity.—Individual flowers last about two to three             days on the plant. Flowers not persistent.         -   Flower diameter.—About 5.5 cm.         -   Flower length (depth).—About 3.1 cm.         -   Throat diameter.—About 1.7 mm.         -   Tube length.—About 3 cm.         -   Tube diameter, at the base.—About 1.3 mm.         -   Flower bud.—Shape: Cylindrical. Length: About 3.8 cm.             Diameter: About 3.7 mm. Color: Close to 54A.         -   Corolla.—Arrangement: Five petals fused at the base and             flaring outwardly forming a star-shaped flower. Petal length             from throat: About 2.9 cm. Petal width: About 1.8 cm. Petal             shape: Narrowly obovate. Petal apex: Mucronate. Petal base:             Attenuate. Petal margin: Entire. Petal texture, upper and             lower surfaces: Smooth, glabrous; velvety. Throat texture:             Smooth, glabrous. Tube texture: Sparsely pubescent. Color:             Petal, when opening and fully opened, upper surface: Close             to 58B; “eye”, close to 155C. Color does not fade with             development. Petal, when opening and fully opened, lower             surface: Close to 55B. Throat: Close to 145C. Tube: Close to             145C.         -   Calyx.—Arrangement: One star-shaped calyx tube with five             sepals fused at the base per flower. Sepal length: About             4 mm. Sepal width: About 1.1 mm. Sepal shape: Lanceolate.             Sepal apex: Acute. Sepal margin: Entire. Sepal texture,             upper and lower surfaces: Sparsely pubescent. Color,             immature and mature, upper surface: Close to 143A. Color,             immature and mature, lower surface: Close to 143A.         -   Peduncles.—Length: About 3 mm. Diameter: About 1.8 mm.             Angle: Upright to outward. Strength: Strong. Texture:             Smooth, glabrous. Color: Close to 145C.         -   Reproductive organs.—Stamens: Quantity/arrangement: Five per             flower. Stamen length: About 2.7 mm. Anther shape: Narrowly             ellipsoidal. Anther size: About 3 mm by 0.9 mm. Anther             color: Close to 154C. Pollen amount: Moderate. Pollen color:             Close to 1D. Pistils: Quantity: One per flower. Pistil             length: About 2.5 cm. Style color: Close to 145C. Stigma             shape: Transversely ellipsoidal. Stigma color: Close to             145A. Ovary color: Close to 145A. Seed/fruit: Seed and fruit             development have not been observed on plants of the new             Catharanthus. -   Garden performance: Plants of the new Catharanthus have been     observed to have good garden performance and to tolerate wind, rain     and temperatures ranging from about 5° C. to about 35° C. to 40° C. -   Pathogen/pest resistance: Plants of the new Catharanthus have not     been observed to be resistant to pests and pathogens common to     Catharanthus. 

1. A new and distinct Catharanthus plant named ‘Sunnichiroro’ as illustrated and described. 